Process of making spirally-wound rolls.



C. S. LOCKWOOD.

PROCESS OF MAKING SPIRALLY WOUND ROLLS.

APPLICATION mu) NOV. 28. 1914.

' 1,152,110. Patented Aug. 31, 1915.

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CHARLES S. LOCK'WOOD, OF NEWARK, NEW JERSEY, ASSIGNOR TO'HYA'IT ROLLERBEARING COMPANY, OF HARRISON, NEW JERSEY, A CORPORATION OF NEW JERSEY.

PROCESS OF MAKING SPIRALLY-WOUND ROLLS.

Patented Aug. 31, 1915.

Application filed November 28, 1am. Serial N 0. 874,403.

To all whom it may concern Be it known that I, CHARLES S. Loonwoon, acitizen of the United States, residing at 289 Market street, Newark,county of Essex, and State of New Jersey, have invented certain new anduseful Improvements in Processes of Making SpirallylVound Rolls, fullydescribed and represented in the following specification and theaccompanying drawings, forming a part of the same.

The present invention relates to an improved process for manufacturing aspirally wound roll with an integral collar upon one portion thereof,the process consisting primarily in first winding the strip into coilsof substantially the diameter required for the collar, and second,swaging down the body of the roll to a suitable diameter, leaving thecollar projecting beyond the said body.

In practice, a mandrel is fitted to the bore of the roll, which may bemade cylindrical or tapering as desired, and the swaging dies may beshaped to swage down the body of the roll into tapering form for use inbearings where end-thrust is resisted;

To form an integral collar upon the roll, by the operation of swaging,thick coils are required, and when such coils are formed by winding arelatively thick strip upon a mandrel, the inner side of the stripis,contracted and the outer side extended, causing the strip to assume ashallow trough-shaped cross section which causes ridges along the edgesof the strip upon the outer side of the roll, but this defect in thesurface of the roll is entirely compensated by the swaging of theroll-body to reduce its diameter, and

by the final finishing of the same and the collar, by turning thesurface in a turning lathe. Collared rolls may therefore be made by thepresent process, which have the clastic or spiral coils, and the desiredaccuracy of form and dimensions.

The invention will be understood by reference to the annexed drawing, inWhich Figure 1 is a side view of a roll with relatively thickconvol-utions having ridges along the edges thereof. Fig. 2 shows thesame rollsomewhat diminished in diameter and increased in length byswaging. Fig. 3 is a diagram illustrating the winding of a adiagrammatic representation of a machine for swaging the rolls; Fig. 5is an end View of the swaging dies; Fig. 6 is a side View of a taperingcollared roll formed of spiral coils; Fig. 7 shows a cylindricalroll,from which such collared roll may be formed; Fig. 8 shows, upon asmaller scale, dies for reducing the body of such collared roll; andFig. 9 represents such collared roll in section upon a mandrel, with asection of the dies used for swaging it.

In Fig. 3, the strip a is shown wound upon a mandrel b so small as togreatly extend the exterior of the strip and give it a concave form,thus producin ridges 0 upon the roll d (shown in Fig. l

The rolls may be swaged by the swaging dies 6 shown in Fig. 4, which areshaped to press upon opposite sides of the roll when the upper die isreciprocated by the ram A wedge g is provided beneath the lower die toadjust the distance of the dies from one another with a uniform strokeof the ram f, and feed-rolls hare shown applied to the roll 03 to propelit through the dies for merely finishing the surface of the roll. Thesame mechanism without the feed-rolls is used to form the collared rollsshown in Fig. 6.

Where an annular projection i is desired upon the roll, as in thetapering roll 03* shown in Fig. 6, a cylindrical roll 7' shown in Fig. 7is first formed of the same diameter as the collar, and a neck or grooveZ is then formed adjacent to the location of the collar, and theremainder of the cylindrical roll 9' may then be swaged down, asindicated by the roll 7' and dies 6 in Fig. 9, to form the body of thetapering roll.

Where a tapering body is desired, as

4 shown in Figs. 6 and 8, the swaging operation is facilitated byinserting a tapering a closer contact of the dies with the body of theroll, and this is especially desirable for exerting the final swagingaction upon the metal, to give the body of the roll its final shfape andfinish. b 4

The nal sha e 'ven the sWa 'n 0 eration may be su cient t b fit the dllg'fgr use in some grade of bearings, but Where they are to be used in ahigh-grade bearing, the rolls are turned in a lathe to give the body andcollar nearly the desired size, then hardened, and finally ground to thedesired dimensions.

Having thus set forth the. nature of the of the roll to a smallerdiameter, leaving the collar projecting beyond the body.

2. The process of making a spirally Wound roll with an integral collar,which consists in first winding the coils of the roll to substantiallythe diameter desired for the collar, second, necking the roll adjacentto the desired collar, third, fitting a mandrel to the bore of the roll,and finally swaging down the body of the roll upon such mandreLleavingthe collar projecting beyond the said bod I1 1 testimony whereof I havehereunto set my hand in the presence of two subscribing witnesses.

Witnesses:

I E. I. WILLIAMS,

M. E. JAHN.

